glib:option-context-ignore-unknown-options (context)

context -- a g:option-context instance
ignore -- true to ignore unknown options, false to produce an error when unknown options are met

The g:option-context-ignore-unknown-options function returns whether unknown options are ignored or not. The (setf g:option-context-ignore-unknown-options) function sets whether to ignore unknown options or not. If an argument is ignored, it is left in the list of command line arguments after parsing. By default, the g:option-context-parse function treats unknown options as error.

This setting does not affect non-option arguments, that is, arguments that do not start with a dash. But note that GOption cannot reliably determine whether a non-option belongs to a preceding unknown option.